Guide for rolling mills



Aug. 15, 1933. A. HARRIS ,803

GUIDE FOR ROLLING MILLS Filed NOV. 12, 1929 A/berz Harris dttoz nu Exit guides for hot-mill Patented Aug. 15, 1933 PATENT orrrca iszasos FOR ROLLING MILLS Albert Harris, Masslllon, Ohio, assignor, by

mesne assignments, to Republic Steel Corporation, Youngstown, Ohio, a Corporation of New Jersey Application November 12, 1929 Serial No. 406,593

12 Claims. (01- sot-s1) This invention relates in general to devices for receiving and guiding material, and in particular to exit guides for receiving and guiding metal sheets from hot-mill rolls and the like. 7 rolls are generally employed to receive and guide the sheets from the rolls to a point where they can be grasped by the tongs of the catcher. It is essential in the construction of these guides that passage of 10 the sheet between the roll and the guide be prevented. To obtain this result the guides are placed as near as possible to the surface of the lower roll but insufilcient clearance between the guide and the roll will result in marring of the roll suri'ace, ,due to the vibration of the mill which causes the guide adjusting devices to become loosened.

In the finish rolling of metal sheets the most minute scratch or groove in the surface of the 2 finishing roll will produces corresponding mark on the sheet. Scratched or. grooved rolls must be refinished at once. This is usually done by means of 'polishingstones pressedagainst the revolving roll and slowly moved from end to end of the roll. In cases wherethe scratch 'orgroove is deep, the roll must be removed from the stand and a new roll installed. Either of these operations entails a. loss of productive time, the amount of time lost varyingwith the quality of sheet being produced and the depth and extent of the scratch or groove.

To prevent the exit guide from marking the roll surface, many devices have been tried, but in most instances these devices have failed, owing to 35 lack of adjustability, inability to get the guide close enough to the roll and the diiflculty of holding the guide in position due to the vibration of the mill which causes the guide adjusting devices to become loosened.

It is a primary object of the present invention to provide an exit guide for hot-mill rolls which will be readily accessible for adjustment and which may be rigidly held in the desired adjusted position.

A further object of the invention is to provide an exit guide for hot-mill rolls which will be of rugged .construction, consist of a small number of inexpensively manufactured and readily replaced parts, and which may be easily detached from the mill.

With the above and other objects in view which will be more readily apparent as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated and claimed.

A preferred and practical embodiment of the invention is shown in the accompanying .drawing, wherein i Fig. 1 is a fragmentary cross-section through a hot mill, showing the, manner in which the guide is mounted with relation to the lower roll of the mill. v

Fig. 2 is a fragmentary front elevation of the parts shown in Fig. 1. Y

Referring more particularly to the drawing, wherein like reference characters designate. corresponding parts throughout the several figures l and 2 designate the upper and lower rolls rem spectively of a hot mill, and 3, therest bar extending between the roll housings and adjacent the lower roll. v w Mounted on the rest bar 3 is an inverted U-.. shaped clamp 4, having depending legs 4a and 4b, these legs being bifurcated, at theirlower' ends to form slots 4c and 4d respectively. The furcations of the leg 4b are provided at their lower ends with rearwardly extending shoulders ,4e.- Extending angularly from the leg 4a of the clamp 4 and toward the lowerv roll '2 is a bracket 4!. Pivotally secured to the leg 4a of the clamp 4 is an eye-bolt 5, the body of which extends through the slot 4d inthe leg 4b. The legs 40 and 4b of the clamp are adapted to be sprung a into gripping engagement with .the rest bar 3 by means of a spanner nut6. The shoulders 4e serve to hold the eye-bolt and spanner nut in position, while tightening the spanner nut.

Threadedly secured within the bracket 41 of the clamp 4 and extending perpendicularly thereto is a screw '1 which is secured to an adjustment rod 8 by means of a universal joint 9.

The adjustment rod 8 is of rectangular crosssection, and is of slightly less width than the width of the slot 40. It is provided at its outer end with a handwheel 8a by means of which it may be rotated. As shown in Fig. 1, the rod 8 is normally held in the slot 40 by means of a slip-pin 8b.

Pivotally secured to the upper portian of the clamp 4, by means of a slip pin 10 is a guide plate 11 the opposite end of which is beveled as at lla. This guide plate is supported upon the m5 upper end of the screw '7.

The degree of clearance between the beveled edge 11a of the guide plate 11 and the lower roll 2 may be varied by removing the slip pin 8b from the leg 4a of the clamp, lowering the no adjustment rod to a position in which it is substantially in alignment with the screw 7, and rotating the handwheel 8a in afiy desired direction. When the desired clearafice has been obtained, the adjustment rod is returned to the position shown in Fig. 1. In this position, the furcations of the leg 4a prevents rotation of the adjustment rod and the screw 7 is thereby held securely against movement caused by vibration of the "mill. 1

If it is desired to remove the entire guide, this may be done by lowering the adjustment rod '8 in the aforesaid manner, and loosening the spanner nut 6 a sufllcientamount to permit .the eye-bolt to be swung clear of the rest bar 3.

The guide-is then free to be lifted from the rest bar.

Although only one guide has been described and shown, it will be readily understood that any desired number of guides maybe employed and these may be secured in any desired position along the rest bar of the mill.

From the foregoing it will be apparent that the present apparatus provides a device which fulfills the objects set forth herein, and constichanges in the form, proportion and minor details of construction, may be resorted to withoutdeparting from the scope of the appended claims.

I claim: g 1.A guide for a hot mill including a clamp :detachably secured to the rest bar of the mill,

an inclinable guide plate, adjustably mounted on the clamp, adjustment means threadedly mounted .in the-clamp for adjusting the guide plate and means for preventing movement of the adjusting means.

2. Thestructure defined in claim 1 in whichthe :first named means includes an adjusting rod of polygonal cross-section and the secondnamed means includes members restraining said adjustment rod against rotary movement.

3. A guidefor .a hot mill, including a clamp ihavingaslot therein, an inclinable guide plate hinged to the clamp, a screw mounted in the clamp for varying the inclination of the guide plate,:an adjustmentrod of polygonal cross-secmeans carried by said clamp for supporting said guide plate in an inclined position adjacent the lower roll of the mill and out of contact therewith.

5. A device as in claim 4, and means for varying the degree of inclination of said guide plate.

6. A device as in claim 4, and an adjusting rod secured to said means and adapted to be rotated to vary the degree of inclination of the guide plate.

I. A device as in claim 4, an adjusting rod secured to said means and adapted to be rotated to vary the degree of inclination of the guide plate, and means for-preventingrotation of the adjusting rod.

8. A guide for a hot mill including a clamp detachably secured to the rest bar of the mill,

a guide plate pivotally secured to said clamp, and a screw threadedly secured to said clamp and supporting said guide plate in an inclined position adjacent the bottom roll of the mill and out of contact therewith.

9. A device as in claim 8, and means for rotating said screw to vary the inclination of said guide plate.

10. A device as in claim 8, and an adjusting rod secured to said screw and adapted to be rotated to vary-.the-degree of inclination of said guide plate.

11. A device as in claim 8, an adjusting rod secured to said screw and adapted to be rotated to vary the degree'of inclination of the guide plate, and means for preventing rotation of the adjusting rod. v

12 A guide for a hot mill including top and bottom rolls, comprising a clamp carried by the rest bar of the mill and mounted for longitudinal adjustment thereof, a guide plate pivoted to said clamp, one end of which is in close proximity to the lower roll of the mill and inclined thereto, and means carried by said clamp and engaging the guide plate intermediate. the extremities thereof for varying the angle of inclination of the guide plate with the lower roll of the mill.

' ALBERT HARRIS. 

